Generics_ErrorHandling.md

Swift Generics & Error Interview Questions (Beginner to Advanced)

Beginner Level

1. What are generics in Swift?
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2. How do you define a generic function in Swift?
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3. Why are generics important in Swift?
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4. What are type constraints in generics?
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5. How do you create a generic class or struct?
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6. What is error handling in Swift?
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7. How do you use do-catch blocks in Swift?
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8. What is the try? keyword in Swift?
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9. What is the purpose of the throws keyword in Swift functions?
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10. How do you create a custom error type in Swift?
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Intermediate Level

1. How do generics improve code reusability?
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2. What is the difference between try? and try! in error handling?
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3. How do you restrict a generic type to conform to a protocol?
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4. How do you handle multiple types in a generic function?
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5. How does Swift handle throwing errors from a closure?
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6. How do you propagate errors in a function that calls other throwing functions?
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7. How do you handle asynchronous error handling in Swift?
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8. What is the Result type in Swift?
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9. How do you handle errors in asynchronous code using Result?
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10. How do you combine generic types and protocols?
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Advanced Level

1. Can you specialize a generic function for a specific type?
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2. How do you implement error handling in Combine or async code?
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3. What is type erasure, and how is it related to generics?
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4. How can you design a reusable data structure using generics?
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5. What are associated types in protocols, and how do they relate to generics?
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6. How does Swift handle covariance and contravariance with generics?
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7. What is a generic extension, and when would you use it?
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8. How do you design a protocol with a generic constraint?
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9. How can generic types impact performance in Swift?
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10. How do you handle complex error types in a codebase?
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